71085650 has 24 divisors (see below), whose sum is σ = 139180080. Its totient is φ = 26937360.

The previous prime is 71085649. The next prime is 71085659. The reversal of 71085650 is 5658017.

It is not an unprimeable number, because it can be changed into a prime (71085659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36464 + ... + 38363.

It is an arithmetic number, because the mean of its divisors is an integer number (5799170).

Almost surely, 2^71085650 is an apocalyptic number.

71085650 is a deficient number, since it is larger than the sum of its proper divisors (68094430).

71085650 is a wasteful number, since it uses less digits than its factorization.

71085650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74858 (or 74853 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 71085650 is about 8431.2306337806. The cubic root of 71085650 is about 414.2482155630.

The spelling of 71085650 in words is "seventy-one million, eighty-five thousand, six hundred fifty".